Avery Berkel CX20 SERIES, Руководство по обслуживанию

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22 — Communications Controller
22–4 CX20/CX30/CX34 Service Manual
22.1.1 C918 external comms controller unit
The comms controller PCB can be housed in a C918 external comms controller
unit.
22.2 Network Connections
IMPORTANT (1):
The network’s cable screen MUST be connected to the chassis
of each network machine.
IMPORTANT (2):
The link on the MASTER unit, between pins 1 and 6, is not used
on networks fitted with communications controllers. See
Figure 22.1.
Refer to Section 21 Networking.
The connections for MASTER and SLAVE units on networks using a
communications controller are detailed in Figure 22.1.
Figure 22.1 Network Connections (with Communications Controller)
SLAVE SLAVE
MASTER
1 3
6 7
Screen
Network
Lead
Machine’s Earth
1 3
6 7
1 3
6 7
9–way D–type plugs
Cable screen connected to chassis
(at each machine)
Cable shielded
Single
twisted
pair
Conductor 1
Conductor 2